public class LevelOne {
    public static void main(String args[]) {

            int i = 5;
            String str = "不及格";
        if(i ==1)
            {
                str = "不及格";
            }
        else if(i ==2)
            {
                str = "及格";
            }
        else if(i ==3)
            {
                str = "中等";
            }
        else if(i ==4)
            {
                str = "良好";
            }
        else if(i==5)
            {
                str = "优秀";
            }
        System.out.println("成绩为"+str);


    }
}

